A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5895-01-522-3010
NSN 5895-01-483-3232
NSN 5835-00-807-5632
NSN 6650-00-751-9958
NSN 5965-01-158-4187
NSN 5935-01-119-1484
NSN 5915-01-505-3730
NSN 5998-00-899-7002
NSN 6320-01-006-6138
NSN 5905-01-602-9405
NSN 5920-01-477-1617
NSN 5960-01-412-0619